Creating a Preloading Screen in Phaser 3

One of the things that almost all games have in common is a loading screen, which can be used to inform the player how long they must wait to play the game. Even though no one likes waiting to play a game, a loading screen is a valuable tool. Instead of having players stare at a blank screen, the loading screen can be used to inform the player how much longer they have to wait, or at minimum let the player know the game is doing something.